Sash corner joint construction



June 2, 1953 c. A. PRESSNALL SASH CORNER JOINT CONSTRUCTION Filed Dec.- 16, 1946 I INVENTOR. kzz/Zafi Zfraaa/zal,

Patented June 2, 1953 Charles Pressnal'b Elkhart, Ind, assig'nor to The AdIake= Gompany, Chicago; I112, a corporationof? Illinois ApplicationDecemher 16, 1946, Serial No. 716,617

1 My invention. concerned. with improvements: in window sash construction. More particularly, it relates to. corner joint constructions for well which are fabricated, from relatively soft metal members such as. aluminum: sections or the like".

It an object of my invention to provide an improved corner joint construction for' window sash of relativelysoft metal material" which provides a simple" yetefi ective corner joint having sufiici'ent strength to withstand the hard usage to which suchsash are subjected:

It is a further object of my invention to provide a corner joint construction for the frame members of metal sash wherein the end of one of the connecting frame members provided with axiallj; projecting tongues which extend through apertures in a side or the other frame member when the: frame membersare' in abutting relation and a clincher or riveting plate of harder metal is: provided against. the: projecting tongues are bent over or. clinched to secure themembers-in-connectedirelationz These and: other objects and advantageszwill" be apparent from a description of one embodiment otmy invention which is shown; by way' of inns tration=,. in the accompanying drawings, wherein:

Fig. I is a perspective: view-of'a top: corner" pot-- tion. of a topsash member having: a jo'i nirv con-- struction embodying the principles. of my lhVGlh tion; I

Fig. 2 is a longitudinal; section; taken on the: liner-2 of Fig; 3

Fig. 3 is a vertical section,- taken on. the line 3-3 ofFig=.2 and Fig-1 4 is an exploded view. showingth'e; end por'-- tions of the sash top and side rail members and theriveting plate; a

In the fabrication of window sash fromrelatively soft meta-lmembers such as extruded aluminum sections; it. has heretofore proverr diff ficult' to providea cornerjoint construction which permits rapid assembly of the'sash members andwhich hassufiicient strength and rigidity" to" withstand the stresses to which thecorner joint is subjected when the" sash is installed" and in use.

In my improved construction I provide a satisf'actory corner connection between the frame.

In the illustrated. embodiment the side rail [0 comprises a. web portionv H which extends longitudinally or axially of the rail and cooperates with a transverse endflange l2. and alip or outside glazing. bead [3 to form a shelf-like glazing portion for receiving the glass and putty (not shown). Transverse parallel flange portions lit and E15 extend outwardly of the web portion. H. and are provided with oppositely directed. channel-like grooves l6 and Il which receive weather stripping (not shown). Flanges Id and [5. are adapted to be slidably received in a guide channel provided in the jamb member. The flange [4 is provided on its outward face with an inwardly directed L-sha'ped' member It which forms with the inner portion of the. flange face a groove. l'9i for reception of." the inside glazing bead member (not shown).

The top M11520 which is illustrated happens. to be tubular in section and includes a bottom wall or inner web portionv 2! which cooperates with a.

vertical flange portion 22' and a lip or outside glazing bead 23 to form a shelf-like. glazing portion for reception of the glass and putty (not shown). The vertical flange portion 22 constitutes anextension of the side wall or face 2 10f the rail member 20. Along the opposite edge. of the webportion 2 la spaced vertically extending wall portion 25' provides a groove or channel 26' for receiving the inside glazing bead member (not shown). The top wall or outer webportion 21' of therail 2tis provided with an upstanding member 28 which is adapted to receive a weather stripping member for engagement in a sealing channel provided in the head molding. A reinforcing'rib 29 extends upwardly or inwardly along;

the bottom wall 2| of therail'Zfl.

As more clearly illustrated in Fig. 4, the top rail 20; is: provided atthe end with longitudinally or axially projecting tongues 3t; 3i, 3%? and 33. Tongues 30 and 31' are integral extensions of the rail. web member 21: and reinforcing member 2% respectivelyz Tongues 32 and 33 are integral extensions' of: rail web member 2-7. The tongues Si),

3 l-,. 32; and: 33; are conveniently formed when the end-.of. thetop: rail zll i's cut or trimmed so that the end" of. each portion of the railsection will abut. inthe. proper. manner against the side of a section. of the side rail in to form a neat and relatively closesfitting joint.

The side rail. It is trimmed orcut at its end toconform tothe top of the top rail 20'.- A cut-out or aperture: 34 is; provid'edat the end of'the webportion. H and at. a spaced distancefrom: the end an. L

i -shaped: aperture 3:5- is prov1.ded'.. [the apertures 35; and 34 receive. thetongues 30, 3|, 32 and 33 which project from the top rail 20 when the side and top rail members In and 20 are brought into abutting relation. While the aperture 34 provided on the end of web portion H is illustrated as an open slot or recess, it may be a completely enclosed aperture of any shape desired, depending upon the shape of the tongues provided on the top rail 20. Likewise, the L-shaped aperture 35 provided in the end of web portion ll may be any shape desired, depending upon the shape of the projecting tongues 30 and 31 on the top rail member 20. The projecting tongues 30, 3|, 32 and 33 and the apertures 34 and 35 should be so shaped and so located that the tongues will pass through the apertures when the frame members are brought into abutting relation.

A riveting or clincher plate 36 is provided with 5 an end recess or slot 3'! and an L-shaped aperture 38 which correspond to the end slot 36 and L-shaped aperture 35, respectively, in the side rail member 10. The plate 36 is made of a material which is relatively hard, such as stainless steel, and is constructed of a size and shape which permits it to be positioned against the outer face of the web I l of the side rail H! with the projecting tongues 30, 3|, 32 and 33 extending some distance beyond its outer face. With the clincher plate 35 in this position the projecting tongues 30, 3|, 32 and 33 are clinched or bent over against the outer surface of the clincher plate 36 by the application of an appropriate tool. The clinching or bending over of the projecting tongues against the hard metal surface serves to tightly connect the side rail l0 and the top rail with a joint which will absorb the stresses to which it is subjected when in use without becoming loose and permitting the sash members to break away from each other.

As illustrated in Fig. l, the top rail member 20 is also provided with projecting lug members 39 and 40 which engage in the channel l9 in the side rail 10 when the frame members If! and 20 are in abutting connected relation. The projections 39 and 40 are of sufficient size to snugly engage in the channel l9 and act as additional reinforcing or stiffening means between the frame members which serve to resist movement therebetween due to any laterally twisting to which the members may be subjected.

While I have referred to specific materials and details of construction in describing the illustrated embodiment of my invention, it will be understood that other materials and other details of construction may be resorted to within the scope of my invention.

I claim:

1. In a window frame corner joint construction, a vertical side frame member of relatively soft metal material having a web portion extending between front and back vertical flange portions, which web portion is provided with apertures extending horizontally and vertically adjacent the end thereof and laterally spaced from said vertical flange portions, a cross frame member of relatively soft metal material having an end thereof positioned in abutting relation with '4 mediate its edges which correspond substantially to the apertures in said web portion, said clincher plate being positioned with its inner face fiat against the outer surface of said web portion and in edgewise engagement with a flange portion of the side frame member, the ends of said tongues being turned over into clinching relation with the outer face of said clincher plate whereby to permanently hold said frame members in rigid connected relation.

2. A sash corner joint construction comprising two sash frame members of relatively soft metal material, the end of the first frame member being arranged in abutting relation with the side of the second frame member, axial projecting integral lug formations extending at angles to each other and in spaced relation from the end of said first frame member, said second frame member having spaced side flange portions and a connecting web portion, said web portion being provided with apertures therein for receiving said projecting lug formations, and a thin flat clincher plate of relatively hard metal material positioned with its inner face flat against the outer surface of said web portion and in edgewise engagement with a side flange portion, aid plate having apertures therein providing clinching edges in angular relation to each other, said lug formations having their ends extending bea side of said frame member, integral axially yond the outer face of said clincher plate and bent over in different directions about the clinching edges thereof and against said outer face whereby said clincher plate is securely and rigidly held against movement in all directions in the plane thereof and said sash frame members are connected together in permanent relation.

3.. In a window frame corner joint construction, a vertical side frame member of relatively soft metal material having a web portion provided with vertically spaced angularly related apertures adjacent the end thereof, a cross frame member of relatively soft metal material having an end thereof positioned in abutting relation with a side of said side frame member, integral axially extending transversely spaced tongues on said end of said cross member, said tongues projecting through the vertically spaced apertures in said web portion of said side frame member and extending substantially beyond the outer surfaces of said web portion, and a relatively thin fiat clincher plate of relatively hard metal material provided with apertures corresponding to the apertures in said web portion, said clincher plate being positioned With its inner face flatly against the outer surface of said web portion and being spaced inwardly from the ends of said projecting tongues, the ends of said tongues being turned over in different directions into clinching relation with the outer face of said clincher plate to permanently and rigidly secure said clincher plate against movement in all directions in the plane thereof and to hold said frame members in rigid connected relation.

4. A sash corner joint construction comprising two sash frame members formed of relatively soft metal material, the end of the first frame member being arranged in abutting relation with the side ofthe second frame member, axially projecting attaching lug formations and reinforcing lug formations extending in laterally spaced relation from the end of said first frame member, said second frame member having a glazing channel and an adjoining web portion provided with apertures therein for receiving said lug formations, which apertures are in anplate against movement in all directions in the plane thereof and to securely connect said sash frame members together in rigid relation.

CHARLES A. PRESSNAIL.

References Cited in the file of this patent UNITED STATES PATENTS Name Date Aaberg Apr. 1, 1913 Mesker et a1 Jan. 6, 1920 Number 

